US9448054B2 - Throttle opening detection device - Google Patents

Throttle opening detection device Download PDF

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Publication number
US9448054B2
US9448054B2 US13/803,603 US201313803603A US9448054B2 US 9448054 B2 US9448054 B2 US 9448054B2 US 201313803603 A US201313803603 A US 201313803603A US 9448054 B2 US9448054 B2 US 9448054B2
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Prior art keywords
magnets
rotor
throttle opening
detection device
opening detection
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US13/803,603
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US20130257416A1 (en
Inventor
Yoshihiro Nomura
Yuichi Kawasaki
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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Assigned to HONDA MOTOR CO., LTD. reassignment HONDA MOTOR CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KAWASAKI, YUICHI, NOMURA, YOSHIHIRO
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/30—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K23/00—Rider-operated controls specially adapted for cycles, i.e. means for initiating control operations, e.g. levers, grips
    • B62K23/02—Rider-operated controls specially adapted for cycles, i.e. means for initiating control operations, e.g. levers, grips hand actuated
    • B62K23/04—Twist grips
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D11/00—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated
    • F02D11/02—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by hand, foot, or like operator controlled initiation means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
    • F02D9/1035—Details of the valve housing
    • F02D9/105—Details of the valve housing having a throttle position sensor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/142—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices
    • G01D5/145—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices influenced by the relative movement between the Hall device and magnetic fields
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
    • F02D2009/0201—Arrangements; Control features; Details thereof
    • F02D2009/0294—Throttle control device with provisions for actuating electric or electronic sensors

Definitions

  • the present invention relates to a throttle opening detection device for detecting opening of a throttle in a motorcycle or other vehicle with a rotatable acceleration grip.
  • an acceleration grip is mounted on a handle bar.
  • a throttle valve mounted on an internal combustion engine performs an open/close operation along with such rotation of the acceleration grip.
  • This type of throttle opening detection device includes a rotor which is rotated in an interlocking manner by manipulation of the acceleration grip. As shown in FIG. 6 of JP-A-2006-112284, for example, a plurality of magnets are mounted on the rotor. Accordingly, positions of the plurality of magnets are changed following the rotation of the rotor.
  • the throttle opening detection device further includes a magnetic sensor such as a Hall element.
  • the magnetic sensor outputs an electric signal corresponding to a magnetic flux density of the magnet at a detecting position.
  • a rotational amount (rotational angle) of the rotor and, eventually, a rotational amount of the acceleration grip can be obtained based on the electric signal output by the magnetic sensor.
  • the magnetic sensor is conventionally arranged outside the rotor in the radial direction.
  • the reason is as follows. Assuming that the magnets and the magnetic sensor have such a positional relationship, when the magnetic flux density corresponding to a rotational angle of the rotor is plotted on a graph, the correlation becomes linear and hence, an electric signal which the magnetic sensor outputs and, eventually, a rotational amount of the acceleration grip can be easily evaluated with high accuracy.
  • the present invention has been made to overcome the above-mentioned drawbacks of the conventional throttle opening detection device, and it is an object of the present invention to provide a throttle opening detection device which has a large degree of freedom in the layout of arrangement and can miniaturize or reduce the size of the throttle opening detection device in the radial direction of the rotor.
  • a throttle opening detection device including: a rotor which is mounted on a handle bar and is rotatable in an interlocking manner by manipulation of an acceleration grip also mounted on the handle bar; at least two magnets which are mounted on the rotor; a magnetic sensor which detects a magnetic force generated by the magnets; and a housing which houses the rotor and the magnetic sensor and is mounted on the handle bar, wherein
  • the magnets are arranged in the vicinity of a peripheral portion of an end surface of the rotor and adjacent to each other along the circumferential direction of the rotor, and
  • the magnetic sensor is arranged to face the rotor end surface in an opposed manner in the axial direction of the rotor.
  • the magnetic sensor is arranged to oppose the rotor along the axial direction of the rotor. Accordingly, a size of the housing along the radial direction of the rotor can be decreased.
  • the miniaturization or reduction in size of the throttle opening detection device can be realized by an amount corresponding to the decrease of the size of the housing. Also, the degree of freedom in the layout of arrangement of parts can be increased.
  • the magnetic sensor may be arranged at a position on a side opposite to the acceleration grip with the rotor sandwiched therebetween, for example.
  • the magnets are spaced apart from each other in the direction along the circumferential direction of the rotor.
  • a further favorable linear correlation is maintained between a rotational angle of the rotor and a magnetic flux density. Therefore, the difference in a magnetic flux density and an electric signal corresponding to the difference in rotational angle of the rotor can be easily recognized. Accordingly, a rotational amount of the acceleration grip, and hence, throttle opening can be evaluated with high accuracy.
  • At least two of the magnets may be spaced apart from each other along the circumferential direction of the rotor, and at least an additional one of the magnets may be arranged between the magnets which are spaced apart from each other. Due to such a constitution, the balance of a magnetic force in an intermediate range is improved whereby the detection accuracy is further enhanced.
  • a fifth aspect of the present invention in addition to any of the first-fourth aspects, with the magnets that are spaced-apart from each other along the circumferential direction of the rotor, it is preferable to set the spaced-apart distance to a distance at which the degree of change in magnetic flux density corresponding to throttle opening in an intermediate range of throttle opening can be decreased.
  • a magnetic flux density and an electric signal are changed with high sensitivity along with a change in a rotational angle of the rotor. Accordingly, a rotational amount of the acceleration grip, and hence, the degree of throttle opening can be determined with higher accuracy.
  • the throttle opening detection device may further include additional magnets which have different magnetic fluxes are respectively laminated to the at least two magnets which are mounted on the rotor.
  • the additional magnets function as so-called back yokes. Even when such a constitution is adopted, the at least two magnets mounted on the rotor and the additional magnets are arranged to face or oppose the magnetic sensor in an axial direction of the rotor, and hence, a thickness of all of the magnets of the throttle opening detection device can be decreased in comparison to the conventionally known technique.
  • the magnetic sensor may be formed of a plurality of magnetic sensor portions arranged in a spaced-apart manner from each other along the circumferential direction of the rotor.
  • these imaginary lines L 1 , L 2 are set so as to intersect with each other at a predetermined angle ⁇ which exceeds 0° and less than 90°, as shown in FIG. 5 .
  • two magnetic sensor portions when two magnetic sensor portions are used, two outputs which differ in phase by an amount corresponding to the angle ⁇ are obtained by one magnetic sensor portion and the other magnetic sensor portion.
  • the differential between these two outputs is calculated, and when an abnormal value is recognized, it is possible to determine that a malfunction occurs in the magnetic sensor.
  • the throttle opening detection device is constituted by arranging the magnetic sensor along the axial direction of the rotor and hence, a size of the housing along the radial direction of the rotor can be decreased. Accordingly, the throttle opening detection device can be reduced in size/miniaturized by an amount corresponding to the decrease of the size of the housing and also the degree of freedom in the layout of arrangement of parts can be increased.
  • the favorable linear correlation can be acquired between a rotational angle of the rotor and a magnetic flux density. Accordingly, an electric signal which the magnetic sensor outputs can be easily evaluated with high accuracy and, eventually, a rotational amount of the acceleration grip (throttle opening) can be determined with high accuracy.
  • the further improved linear correlation can be maintained between a rotational angle of the rotor and a magnetic flux density and hence, the throttle opening can be easily evaluated with higher accuracy.
  • the balance of a magnetic force in the intermediate range can be improved and hence, the detection accuracy is further enhanced.
  • a magnetic flux density and an electric signal change with high sensitivity along with a change in a rotational angle of the rotor. Accordingly, the throttle opening can be determined with higher accuracy.
  • the magnets and the magnetic sensor are arranged to face each other in an opposed manner in the axial direction of the rotor and hence, a thickness of the magnets can be decreased.
  • the seventh aspect of the present invention it is possible to easily determine whether or not a malfunction occurs in the magnetic sensor.
  • FIG. 1 is a schematic longitudinal cross-sectional view of a throttle opening detection device according to an exemplary embodiment of the present invention.
  • FIGS. 2A and 2B are respectively a plan view of an essential part and a side view of the essential part showing the positional relationship among a rotor, magnets and a magnetic sensor (Hall element) which constitute the throttle opening detection device shown in FIG. 1 .
  • FIG. 3 is a graph showing the relationship between a rotational angle of the rotor and a magnetic flux density in the throttle opening detection device shown in FIGS. 1, 2A and 2B .
  • FIG. 4A and FIG. 4B are respectively a plan view of an essential part and a side view of the essential part showing the positional relationship among a rotor, magnets and a Hall element which constitute a throttle opening detection device according to another embodiment of the present invention.
  • FIG. 5 is a plan view of an essential part showing the positional relationship among a rotor, magnets and a Hall element which constitute a throttle opening detection device according to still another embodiment of the present invention.
  • FIG. 6 is a graph showing the relationship between a rotational angle of the rotor and a magnetic flux density in the throttle opening detection device shown in FIG. 5 .
  • FIG. 1 is a schematic longitudinal cross-sectional view of a throttle opening detection device 10 according to a first embodiment of the present invention.
  • the throttle opening detection device 10 is mounted on a handle bar 12 of a motorcycle.
  • the device 10 includes a rotor 16 rotational amount (rotational angle) of the rotor 16 , when an acceleration grip 14 is rotated due to a manipulation by a rider, is converted into an electronic signal which is transmitted to an electronic control unit (ECU or the like) not shown in the drawing.
  • ECU electronice control unit
  • an insertion hole 18 is formed in the rotor 16 in a penetrating manner, and the handle bar 12 is inserted into the insertion hole 18 .
  • a predetermined clearance is formed between an inner wall of the insertion hole 18 and the handle bar 12 and hence, the rotor 16 is rotatable along the circumferential direction of the handle bar 12 .
  • An accommodation groove 20 is formed in the rotor 16 along the axial direction (the lateral direction in FIG. 1 ) of the rotor 16 , and a return spring 22 is accommodated in the accommodating groove 20 .
  • a return spring 22 is accommodated in the accommodating groove 20 .
  • one end of the return spring 22 is engaged with the rotor 16
  • the other end of the return spring 22 is engaged with a housing 24 .
  • a portion of the rotor 16 projects outwardly in the radial direction.
  • two fitting recessed portions 26 a , 26 b are formed by indenting the rotor 16 in the vicinity of a peripheral portion of the projecting portion such that the fitting recessed portions 26 a , 26 b are arranged adjacent to each other in the circumferential direction of the rotor.
  • Magnets 28 a , 28 b are fitted into one fitting recessed portion 26 a
  • magnets 28 c , 28 d are fitted into the other fitting recessed portion 26 b .
  • magnets 28 a to 28 d are mounted on one end surface of the rotor 16 , the magnets 28 a , 28 b are laminated in the fitting recessed portion 26 a , and the magnets 28 c , 28 d are laminated in the fitting recessed portion 26 b . Further, in view of the relationship that the fitting recessed portions 26 a , 26 b are arranged adjacent to each other, the magnet 28 a is arranged adjacent to the magnet 28 c , and the magnet 28 b is arranged adjacent to the magnet 28 d.
  • the magnets 28 a , 28 d have the same polarity, and the magnets 28 b , 28 c have the same polarity opposite to the polarity of the magnets 28 a , 28 d .
  • the magnets 28 a , 28 d have an S pole, and the magnets 28 b , 28 c have an N pole.
  • the fitting recessed portions 26 a , 26 b are slightly spaced apart from each other in the circumferential direction of the rotor. Accordingly, the magnets 28 a , 28 b are also spaced apart from the magnets 28 c , 28 d in the circumferential direction of the rotor. Due to such spacing, as described later, when a magnetic flux density with respect to a rotational angle of the rotor 16 is plotted on a graph, a correlation between the rotational angle and the magnetic flux density becomes linear.
  • a magnetic flux density of a magnetic field generated by the magnets 28 a to 28 d is detected by a Hall element 30 which constitutes a magnetic sensor.
  • the Hall element 30 outputs an electric signal corresponding to magnitude of the detected magnetic flux density.
  • the Hall element 30 is supported on a board 31 , and is arranged at a position where the Hall element 30 faces one side surface of the rotor 16 on which the magnets 28 a to 28 d are mounted in an opposed manner.
  • the Hall element 30 is arranged at a position on a side of the rotor 16 opposite to the acceleration grip 14 with the rotor 16 sandwiched therebetween.
  • a Hall element magnetic sensor
  • the Hall element 30 is arranged along the axial direction of the rotor 16 .
  • the Hall element 30 faces a clearance formed between the fitting recessed portions 26 a , 26 b which are spaced apart from each other in an opposed manner.
  • the Hall element 30 is positioned between the magnets 28 a , 28 b on the one side and the magnets 28 c , 28 d on the other side.
  • the rotor 16 and the Hall element 30 are housed in the housing 24 . Accordingly, the rotor 16 and the Hall element 30 are protected.
  • an engaging recessed portion 32 is formed by indenting.
  • an engaging projecting portion 36 is formed in a projecting manner. The engaging projecting portion 36 is engaged with the engaging recessed portion 32 . Accordingly, when the throttle pipe 34 is rotated along with the rotation of the acceleration grip 14 , the engaging projecting portion 36 pushes an inner wall of the engaging recessed portion 32 . As a result, the rotor 16 is rotated.
  • the throttle opening detection device 10 has the above-mentioned basic constitution, and the manner of operation and advantageous effects of the throttle opening detection device 10 are explained next.
  • the Hall element 30 (magnetic sensor) is arranged along the axial direction of the rotor 16 . That is, it is unnecessary to arrange the Hall element 30 outside the rotor 16 in the radial direction as has been conventionally done. Thereby, a size of the housing 24 along the radial direction of the rotor 16 can be decreased by an amount correspondingly. As a result, the throttle opening detection device 10 can be reduced in size/miniaturized.
  • the Hall element 30 is positioned between the magnets 28 a , 28 b on the one side and the magnets 28 c , 28 d on the other side.
  • a magnetic field where lines of magnetic force are directed as shown in FIG. 2B is generated.
  • the throttle pipe 34 When a rider rotates the acceleration grip 14 mounted on the distal end of the handle bar 12 of the motorcycle in the circumferential direction, the throttle pipe 34 is rotated along with the rotation of the acceleration grip 14 . As a result, the engaging projecting portion 36 formed on the throttle pipe 34 pushes the inner wall of the engaging recessed portion 32 formed on the rotor 16 and hence, the rotor 16 is rotated. Here, the return spring 22 is pulled and extended.
  • the Hall element 30 transmits an electric signal to the ECU and the like with an output amount corresponding to a change amount of the magnetic flux density.
  • FIG. 3 The relationship between a rotational angle of the rotor 16 and magnitude of a magnetic flux density is shown in FIG. 3 .
  • a solid line indicates the case where the magnets 28 a , 28 b and the magnets 28 c , 28 d are spaced apart from each other in the circumferential direction of the rotor, and a broken line indicates the case where the magnets 28 a , 28 b and the magnets 28 c , 28 d are arranged adjacent to each other without being spaced part from each other.
  • both the solid line and the broken line indicate that the magnetic flux density is changed in a straight line or substantially straight line shape with respect to a change in a rotational angle of the rotor 16 in a so-called intermediate range. That is, the correlation between the rotational angle of the rotor 16 and the magnetic flux density is linear. Accordingly, magnitude of a rotational amount of the acceleration grip 14 and magnitude of an electric signal which the Hall element 30 transmits based on the detected magnetic flux density correspond to each other. Accordingly, a rotational amount of the acceleration grip 14 , and hence, throttle opening can be easily determined.
  • the solid line has the longer region formed in a substantially straight line shape since the gradient of the solid line is smaller than the gradient of the broken line. This means that by providing the appropriate spaced-apart distance between the magnets 28 a , 28 b and the magnets 28 c , 28 d , in a relatively wide region of the intermediate range, the degree of change in magnetic flux density with respect to the degree of change in a rotational amount (throttle opening) of the acceleration grip 14 can be lowered. That is, a so-called smoothing effect appears.
  • a magnetic flux density and an electric signal are changed with high sensitivity along with a change in a rotational amount of the acceleration grip 14 in a wide range. Accordingly, the degree of a rotational amount of the acceleration grip 14 can be accurately determined based on the difference in an output amount of the electric signal.
  • a rotational amount of the acceleration grip 14 (a rotational amount of the rotor 16 ) can be determined with high accuracy.
  • the degree of freedom in the layout of arrangement of parts can be increased, and the miniaturization of the throttle opening detection device 10 in the direction along the radial direction of the rotor 16 can be also realized. Further, the throttle opening can be also evaluated with high accuracy.
  • the extended return spring 22 returns to an original position due to elasticity thereof and hence, the rotor 16 , the throttle pipe 34 and the acceleration grip 14 return to their original or neutral positions.
  • FIG. 1 , FIG. 2A and FIG. 2B the case where a predetermined clearance is formed between the magnets 28 a , 28 b and the magnets 28 c , 28 d is exemplified.
  • a fitting recessed portion 26 c is formed in the clearance, and additional magnets 28 e , 28 f may be further fitted into the fitting recessed portion 26 c.
  • the magnets 28 e , 28 f are press-fit into the fitting recessed portion 26 c such that the magnets 28 e , 28 f are arranged adjacent to each other, the polarity of the magnet 28 e and the polarity of magnets 28 a , 28 d are the same, and the polarity of the magnet 28 f and the polarity of the magnets 28 b , 28 c are the same. Due to such setting of polarities, a balance of a magnetic force in an intermediate range is improved so that the detection accuracy is further enhanced.
  • the present invention is not particularly limited to the above-mentioned embodiments, and various changes can be made without departing from the gist of the present invention.
  • a clearance may be formed between two magnets arranged adjacent to each other or two magnets may be in close contact with each other without forming a clearance.
  • the Hall element may be formed of a plurality of Hall elements (magnetic sensor portions).
  • FIG. 5 shows a case where two Hall elements 30 a , 30 b are provided.
  • An imaginary line L 1 which connects the center of rotation O of the rotor 16 and the Hall element 30 a and an imaginary line L 2 which connects the center of rotation O and the Hall element 30 b intersect with each other at a predetermined angle ⁇ .
  • the Hall elements 30 a , 30 b are spaced apart from each other along the circumferential direction of the rotor.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Steering Devices For Bicycles And Motorcycles (AREA)
US13/803,603 2012-03-28 2013-03-14 Throttle opening detection device Active 2033-06-17 US9448054B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012072907A JP5961414B2 (ja) 2012-03-28 2012-03-28 スロットル開度検出装置
JP2012-072907 2012-03-28

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US20130257416A1 US20130257416A1 (en) 2013-10-03
US9448054B2 true US9448054B2 (en) 2016-09-20

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US (1) US9448054B2 (ja)
EP (1) EP2644870B1 (ja)
JP (1) JP5961414B2 (ja)
CN (1) CN103359244B (ja)
ES (1) ES2535964T3 (ja)

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US20190094008A1 (en) * 2017-09-22 2019-03-28 Toyo Denso Co., Ltd. Throttle device
US10677171B2 (en) * 2016-09-05 2020-06-09 Denso Corporation Angle detection mechanism and angle detection system
US20200239101A1 (en) * 2019-01-29 2020-07-30 Asahi Denso Co., Ltd. Throttle grip device
US20220057235A1 (en) * 2020-08-20 2022-02-24 Bourns, Inc. Sensor for detecting a position
US11499840B2 (en) * 2020-07-16 2022-11-15 Toyo Denso Kabushiki Kaisha Accelerator position sensor

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JP2015182634A (ja) * 2014-03-25 2015-10-22 本田技研工業株式会社 鞍乗型車両の操作装置
JP6289399B2 (ja) 2015-02-23 2018-03-07 本田技研工業株式会社 位置検出装置
CN107228767A (zh) * 2017-07-26 2017-10-03 安庆市鼎立汽车配件有限公司 一种基于开度分析的气门智能检测方法
JP7148054B2 (ja) * 2018-04-26 2022-10-05 朝日電装株式会社 スロットルグリップ装置
JP7241328B2 (ja) * 2018-04-26 2023-03-17 朝日電装株式会社 スロットルグリップ装置
JP7158189B2 (ja) * 2018-07-11 2022-10-21 東洋電装株式会社 スロットルグリップ装置
CN112776928A (zh) * 2019-10-22 2021-05-11 东洋建苍电机股份有限公司 油门控制装置
JP7406362B2 (ja) * 2019-12-12 2023-12-27 東洋電装株式会社 ポジションセンサ及びポジション検出方法
FR3129205B1 (fr) * 2021-11-15 2023-10-27 Finx Dispositif de detection de position relative avec coupe-circuit

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CN103359244A (zh) 2013-10-23
US20130257416A1 (en) 2013-10-03

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